brenda-enzymes.org
BRENDA Enzyme Database
Last scanned Jul 27, 2026, 2:43 PM
Overall score
Fair
Summary
BRENDA - The Comprehensive Enzyme Information System. This website uses Apache. SEO is fair (60/100) and accessibility is good (85/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing canonical link.
BRENDA - The Comprehensive Enzyme Information System
Top issues to fix
12 issues found · 4 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
2 cookies without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
+6 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
272 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- BRENDA Enzyme Database
- Description
- BRENDA - The Comprehensive Enzyme Information System
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- Robots meta
- Manifest
- https://brenda-enzymes.org/manifest.json
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- 194.94.219.5
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Hellenic Academic and Research Institutions CA
- Subject
- *.brenda.dsmz.de
- Valid from
- Oct 9, 2025
- Valid to
- Oct 9, 2026
- Days until expiry
- 74
- SAN domains
- *.brenda.dsmz.de, brenda.dsmz.de, brenda-enzymes.org, www.brenda-enzymes.org, brenda-enzymes.de, www.brenda-enzymes.de, brenda-enzymes.info, www.brenda-enzymes.info, enzyme-information.de, www.enzyme-information.de, enzyme-information.org, www.enzyme-information.org, enzyme-information.info, www.enzyme-information.info
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 0 · H2 3 · H3 6
Links
52 internal · 14 external · 5 broken
Images
7 total · 1 missing alt
Scripts / Styles
7 scripts · 2 stylesheets
JS / CSS size
613 B · 0 B
Page size
22.0 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- No H1 heading found
- Missing viewport meta tag
Scan details
- Requested URL
- https://brenda-enzymes.org
- Final URL
- https://brenda-enzymes.org
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 272 ms
- HTML size
- 22.0 KB
- Redirect chain
- https://brenda-enzymes.org
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Frequently asked questions
- What technology does brenda-enzymes.org use?
- brenda-enzymes.org is built with PHP, Apache.
- Is brenda-enzymes.org secure (HTTPS)?
- Yes. brenda-enzymes.org uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Oct 9, 2026.
- Who hosts brenda-enzymes.org?
- Hosting provider information for brenda-enzymes.org is not available yet.
- What is brenda-enzymes.org's SEO score?
- brenda-enzymes.org scored 60/100 for SEO in the latest analysis (fair).
- What is brenda-enzymes.org's overall website score?
- brenda-enzymes.org has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card